We have a few users that see a warning about a license being expired for a free plugin see eg https://forum.piwik.org/t/license-missing-of-a-free-glp-plugin/21674 . Clearly this is a bug. They also mentioned that the shown list for premium features and free plugins is the same. I looked for hours through the code on Piwik and Marketplace and tried to explain it but couldn't. Then was browsing through logs on the Marketplace to hopefully find a request or something weird and tada there is .

Usually a request be like plugins?keywords=&purchase_type=paid&query=&sort=lastupdated&release_channel=latest_stable &prefer_stable=1

but I found requests where it sent plugins?keywords=&amp;purchase_type=paid&amp;query=&amp;sort=lastupdated&amp;release_channe l=latest_stable&amp;prefer_stable=1